Effects of Torsional Flexibility in Asymmetric Systems

Date

2024-01-01

Author

Kaatsız, Kaan
Sucuoğlu, Haluk

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In this comprehensive study, the seismic response of single-story asymmetric systems with three degrees of freedom is thoroughly evaluated. The structures under investigation exhibit diverse torsional characteristics, ranging from torsionally stiff to flexible systems. Classification of torsional characteristics relies on indicators such as modal participation factors and uncoupled frequency ratios. Nonlinear dynamic analyses are performed under bi-axial ground motion pairs. Major findings indicate that systems initially classified as torsionally flexible exhibit torsionally stiff nonlinear behavior characteristics in terms of displacement demand distribution. In the case of torsionally stiff systems, it is determined that nonlinear action does not substantially alter demand distribution. Torsionally stiff behavior remains essentially unchanged even in high levels of nonlinearity during the bi-axial response history analyses. The outcomes of the study not only yield essential insights into the seismic behavior of single-story asymmetric systems but also highlight the intricate influence of torsional characteristics on their dynamic response.

Subject Keywords

Accidental eccentricity, Asymmetric systems, Plan irregularity, Torsionally flexible, Torsionally stiff

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85204394450&origin=inward
https://hdl.handle.net/11511/112086

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Department of Civil Engineering, Conference / Seminar